Standard Hip Roof Pitch

The most daunting task is selecting the height.

Standard hip roof pitch.

I had a gable before with a solid ring beam before irma. But the most commonly used pitches range between 4 12 and 9 12. There are always some limitations in the selection of the height. Pitches of less than 2 12 are considered flat roofs even though they may be very slightly angled.

Pitches lower than 4 12 have a slight angle and they are defined as low slope roofs. The tall steep roofs are high priced and construct of those are complicated. A hip roof design refers to a roof where the roof sides slope downwards from a middle peak with the rafter ends meeting the exterior walls of the house. Pitches above 9 12 are very highly angled and are designated steep slope roofs.

Modern residential hip roof construction uses common pitch ratios in general. Each of the four sides of the roof slope downward there are no upright or vertical parts no gables etc on a hip roof. A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof. What is the best pitch for rebuilding a post irma hip roof.

The most commonly used roof pitches fall in a range between 4 12 and 9 12. One engineer recommends a 12 12 pitch for the new roof while another recommends a 7 12 pitch. A common range is given from 1 12 to 4 12 whereas conventional dimensions vary from 4 12 to 9 12 but the steep roofing technique follows slope above 9 12 with additional fasteners. You write the pitch assuming a run of 12 inches thus the ratio would describe how much a roof rises for each foot of the run.

Selecting the roof pitch. The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. The height and rake of a roof are one of the important factors.

How do you calculate the slope of a roof. As aforementioned there is no standard pitch of a roof. This is for the top level of a 3 story building that is 26 by 64. The table below shows common roof pitches and the equivalent grade degrees and radians for each.

The ibhs recommends a 4 to 6 pitch roof.